Posts Tagged ‘nature’

Liam Shore is a third-year researcher at the University of Liverpool, in the Department of Philosophy. His research interests fall within the domain of ethics, notably on the ethics of digital and biotechnologies.

The Making of a Philosopher

Im a philosopher, but I havent always been one, so how does someone become a philosopher? And more fundamentally, why would anyone want to become one?

As a rare vocation, youd be forgiven for supposing that philosophers are an extinct species who once roamed the Athenian plazas during early antiquity, gesticulating poignantly and wearing togas. Well, happily they do exist today, sans the togas, largely unnoticed, behind the scenes on ethics boards, or engaging in fundamental first-principles critiques of.well.everything.

A question arises: if philosophers critique everything, how do they develop knowledge to criticise specialist areas? This becomes particularly poignant in an applied ethics context. My own personal journey, from Technologist to Philosopher, shows that one practically needs to be educated in two disciplines to become a bona fide philosopher.

When deciding what subjects to study, and what career to pursue, I was torn between multiple strong interests. In third place, Technology; in second place, Medicine; and in first place, Philosophy. In my case, I took the reverse path toward becoming a philosopher. Namely, I studied technology, worked in the biological sciences industry, and returned to academia with domain-specific expertise to enter into the philosophy sub-field of ethics. The beauty of philosophy for me, and the reason why I personally had the desire to pursue becoming a philosopher, is that philosophy, being able to critique everything, can powerfully converge disparate interests. It is this quality that made philosophy my first love, and so my PhD journey began, delving into the ethics of radical life extension.

Understanding Rejuvenation Biotechnologies

Recently, breakthroughs in rejuvenation biotechnologies, particularly those of the Strategies for Engineered Negligible Senescence (SENS) variant, have garnered little attention, and yet constitute steps towards a paradigm-altering event. SENS therapies, like maintaining classic cars to prolong their lifespan, seeks to do the same for our bodies as we age. SENS suggests that ageing is caused by the accumulation of cellular and molecular damage throughout the body over time, and advocates posit that by repairing or reversing this damage, it is possible to rejuvenate tissues and organs, thereby extending a persons healthy lifespan. Ultimately, by seeking to tackle age-related diseases at their root, via interventions such as stem cell therapies, the aim is to bring age-related diseases fully under comprehensive medical control. Overall, the eventual aim of SENS is to combine a panel of these therapies to combat all preceding causes of age-related diseases, and consequently, tackle ageing itself!

Although this sounds futuristic, there are therapies in various stages of development, with the furthest along being in clinical trials. Advocates claim that these therapies could, in due course, function well enough to rejuvenate a persons body to a youthful state. In effect, this is a process that, amongst other things, removes damage and replaces cells, enabling the body to regain a healthy condition. The outcome of extending good health is that it prolongs life, as it postpones the onset of age-related diseases until higher chronological ages. Accordingly, if someone repeatedly receives these therapies throughout life, this could constitute a potentially radical life-extending situation, as periods of poor health may be postponed repeatedly, allowing one to maintain optimal physiological functioning for longer, thereby delaying death itself!

A Case for Philosophical Inquiry The SENS approach to rejuvenation biotechnologies represents a bold vision for extending healthy lifespans and combating age-related diseases. However, realising this vision requires careful consideration of the ethical implications of extending human lifespan, making the SENS approach a question for philosophical research.

The most common ethical concerns for life-extending technologies are Health Equity i.e. fairness in health opportunities for all; Longevity/Population Dynamics i.e. understanding how long people live & how populations change; Environmental Impacts i.e. the effects of human activities on nature and Informed Consent/Autonomy i.e. respecting peoples right to make their own decisions.

Nevertheless, although important, these concerns dont engage with how this technology impacts what we find meaningful at the profoundest level as human beings. However, my research incorporates all the aforementioned ethical concerns and delves deeper into the realms of identity, purpose, and meaning in life, primarily through an existentialist lens.

Existentialism, as a philosophical theory, concerns itself with questions of: the nature of individual existence, authenticity of self, human freedom, and the search for purpose/meaning in life. It is via this prism that Im currently defining a taxonomy of values supported by radical life extension advocates, with this taxonomy categorising virtues like fairness, compassion, and autonomy, providing a structured framework for ethical analysis. In addition, Im exploring how a SENS-induced radically extended life may impact what we value. And next, I plan to explore whether the consequences of SENS therapies could result in mental ageing, in essence a feeling of listlessness, a sense of ennui, or a notion of world-weariness.

Overall, I hope that my research will deliver original insights to help us work towards a future where radically extended healthspans are possible, while fully prioritising and ensuring human well-being.

Read more from the original source:
Becoming an Expert: Exploring the Ethics of Radical Life Extension - News - University of Liverpool - News

SNIPR Biome

SNIPR Biome receives funding from CARB-X to support advancement of CRISPR-medicine SNIPR001 into clinical trials in haematological cancer patients

Phase 1b/2a trial will evaluate SNIPR001 for the prevention of E.coli infections in patients undergoing hematopoietic stem cell transplantation

Copenhagen, April 22 2024: SNIPR Biome ApS (SNIPR), the company pioneering the development of precision medicines using CRISPR technology for microbial gene therapy, announces today that it has received $5.48 million from Combating Antibiotic-Resistant Bacteria Biopharmaceutical Accelerator (CARB-X) to co-fund a Phase 1b/2a clinical trial in hematological cancer patients.

The trial will evaluate SNIPR001, the first CRISPR-armed phage therapeutic that specifically targets E. coli in the gut, for the prevention of E. coli bloodstream infections in hematological cancer patients who are undergoing hematopoietic stem-cell transplantation (HSCT) and are colonized with Fluoroquinolone Resistant (FQR) E. coli. Fluoroquinolone is recommended in the US for prophylaxis of bacterial infections and febrile neutropenia in hematological cancer patients at high risk of neutropenia.

Despite the significant advances in hematologic cancer therapy over the past decade, infectious complications, and antimicrobial resistance (AMR) continue to pose significant threats to patients and clinical outcomes1. Currently, there are no approved therapies for the prevention of bloodstream infections (BSIs) in hematological cancer patients. SNIPR Biome is developing SNIPR001 to address this urgent unmet need to combat infections in hematological cancer patients.

Preclinical data published in Nature Biotechnology described SNIPR001s ability to selectively target and remove antibiotic-resistant E. coli strains in the gut, potentially offering a safe treatment which preserves the rest of the gut microbiome. This was supported by interim Phase 1 data published in 2023, which showed that oral dosing of SNIPR001 over seven days across three dosing levels in 24 healthy individuals was well tolerated. Furthermore, SNIPR001 could be recovered in faeces from treated individuals in a dose-dependent manner, and treatment with SNIPR001 numerically lowered gut E. coli levels.

Anticipated to begin later this year, the randomized, double-blinded Phase 1b/2a trial will investigate the safety, tolerability, pharmacokinetics, and pharmacodynamics of orally administrated SNIPR001 in 24 patients. It will be conducted at up to 10 sites across Europe and the United States.

CARB-X, a global non-profit partnership dedicated to supporting early-stage antibacterial research and development to address the rising threat of drug-resistant bacteria, has been a long-term collaborator with SNIPR in this field. The funding announced today enables SNIPR to move SNIPR001 into Phase 1b/2a clinical trials and will serve as a cornerstone for a further significant fundraise to enable the Company to continue development of its pipeline of CRISPR-based AMR and gut-directed gene therapies.

Story continues

Dr Christian Grndahl, Co-founder and CEO of SNIPR Biome, commented: Antibiotic resistance is one of healthcares biggest problems today, affecting treatment efficacy and survival among patients who are often already very sick. We are using our knowledge of gene editing and synthetic biology to create highly specific, designer bacteria and phage to disrupt, edit or add genes, and deliver these precision medicines in a carefully targeted way. We are pleased to be continuing our partnership with CARB-X who share our commitment to developing therapies for vulnerable patients.

Erin Duffy PhD, Chief of Research & Development, CARB-X, said: Having underscored safety for SNIPR001 in healthy subjects, SNIPR Biome is now focusing on demonstrating proof-of-mechanism for this novel product, with our support.We are keen to establish a link between gut decolonization and prevention of infection as a novel approach to antimicrobial resistance, and SNIPR001 offers the possibility of doing so.

CARB-X funding for this research is supported by the Biomedical Advanced Research and Development Authority under agreement number: 75A50122C00028, and by awards from Wellcome (WT224842), and Germanys Federal Ministry of Education and Research (BMBF). The content of this press release is solely the responsibility of the authors and does not necessarily represent the official views of CARB-X or any of its funders.

Ends

About SNIPR001 SNIPR001, a CRISPR-armed phage therapeutic that specifically targets E. coli in the gut, is designed to prevent infections from spreading into the bloodstream and represents a promising advancement against antibiotic-resistant pathogens. The pre-clinical studies of SNIPR001 published in Nature Biotechnology2 demonstrated the products activity against multi-drug resistant strains of E. coli and its specificity towards E. coli with no off-target effects toward any of the tested non-E. coli strains. SNIPR successfully completed a Phase 1 trial in the US, also funded by CARB-X, demonstrating safety of SNIPR001 and target engagement with E. coli in the gut of healthy subjects without disturbing the overall gut microbiome (NCT05277350), supporting its potential as a safe and effective preventative therapy for bloodstream infections in hematological cancer patients. SNIPR001 has been granted a Fast-Track designation for the indication Prophylaxis of bloodstream E. coli infections in patients with hematological malignancy at risk of neutropenia from the US Food and Drug Administration (FDA). SNIPR001 is also being developed to directly treat active E. coli infections.

About SNIPR BIOME SNIPR Biome is a Danish clinical-stage biotech company pioneering the development of precision medicines using CRISPR technology for microbial gene therapy. We are pioneering a novel use of CRISPR/Cas technology to better treat and prevent human diseases through precision killing of bacteria or gene modification. SNIPR Biome was the first company to orally dose humans with a CRISPR therapeutic and the first company to have been granted US and European patents for the use of CRISPR for targeting microbiomes. SNIPR technology is used in collaborations with Novo Nordisk A/S, CARB-X, SPRIN-D, and MD Anderson Cancer Center. For more information, visit http://www.sniprbiome.com and follow us on LinkedIn and X.

About CARB-X

CARB-X (Combating Antibiotic-Resistant Bacteria Biopharmaceutical Accelerator) is a global non-profit partnership dedicated to supporting early-stage antibacterial research and development to address the rising threat of drug-resistant bacteria. CARB-X supports innovative therapeutics, preventatives and rapid diagnostics. CARB-X is led by Boston University and funded by a consortium of governments and foundations. CARB-X funds only projects that target drug-resistant bacteria highlighted on the CDCs Antibiotic Resistant Threats list, or the Priority Bacterial Pathogens list published by the WHO, with a priority on those pathogens deemed Serious or Urgent on the CDC list or Critical or High on the WHO list. https://carb-x.org/ | X (formerly Twitter) @CARB_X

Contact ICR Consilium Tracy Cheung, Chris Welsh, Davide Salvi SNIPR@consilium-comms.com

SNIPR Biome Dr Christian Grndahl, Co-founder and CEO contact@sniprbiome.com http://www.sniprbiome.com

1 So M. Determining the Optimal Use of Antibiotics in Hematopoietic Stem Cell Transplant Recipients. JAMA Netw Open. 2023 Jun 1;6(6):e2317101 2 Gencay, Y.E., Jasinskyt, D., Robert, C. et al. Engineered phage with antibacterial CRISPRCas selectively reduce E. coli burden in mice. Nat Biotechnol (2023). https://doi.org/10.1038/s41587-023-01759-y

Read more here:
SNIPR Biome receives funding from CARB-X to support advancement of CRISPR-medicine SNIPR001 into clinical ... - Yahoo Finance

The discovery of Clustered Regularly Interspaced Short Palindromic Repeats (widely known as just CRISPR) has been revolutionary in many ways. For one, it has transformed disease research. Just recently, scientists revealed they could cut HIV out of cells using the gene-editing technology, and it also has the potential to completely change the way cancer is treated, too. But CRISPRs abilities dont end there. It could also change the way that food tastes (making healthier foods more appealing to children, for example), and even save the food system from the brutal impact of the climate crisis.

Right now, extreme weather events, including drought, heatwaves, and floods, threaten essential crops all over the world. In fact, one 2021 study from NASA suggested that the impact of global climate change could impact crops within the decade. Maize yields are a particular concern, as the research suggested they could drop by 24 percent. A 20 percent decrease from current production levels could have severe implications worldwide, Jonas Jgermeyr, crop modeler and climate scientist, said at the time.

But, by improving their resilience, CRISPR could help to save more crops from falling foul to extreme weather events, which, as the human-driven climate crisis intensifies, are only set to become more common over the coming years.

Pexels

CRISPR is, essentially, a revolutionary gene-editing technology. Adapted from a naturally occurring defense mechanism found in bacteria, the system enables scientists to make precise changes to the DNA of organisms. In 2020, Emmanuelle Charpentier and Jennifer Douda were awarded the Nobel Prize in Chemistry for pioneering CRISPR-Cas9. The technology is also known as genetic scissors, because of the way it can help researchers cut DNA.

The statement from The Nobel Prize at the time noted that, since 2012, when Charpentier and Doudna first discovered the CRISPR-Cas9 genetic scissors, it has contributed to many important discoveries in basic research, adding that as well as leading to major breakthroughs in curing inherited diseases, plant researchers have been able to develop crops that withstand mold, pests, and drought.

In terms of crops, CRISPR can help scientists change and insert DNA into plants to make them more resistant to harsher surroundings. It could help make them less vulnerable to extreme temperatures, for example, and even help increase crop yield to produce more food for more people.

Pexels

CRISPR is already helping scientists to overcome major challenges in the food system. In January 2024, for example, a paper published in Nature revealed that researchers in Kenya are working on making sorghuma staple food across many African countriesmore resilient to a parasitic weed, called Striga, using the gene-editing technology.

In Singapore, a company called Singrow launched the worlds first climate-resilient strawberry last year, which was also created with the help of CRISPR. In North Carolina, the scientists behind the food startup Pairwise are developing more nutritious crops, produce higher yields, and require fewer resources to grow with the technology. Earlier this year, the company was even acknowledged by Time Magazine as one of Americas Top Greentech Companies.

These companies are far from alone. According to the food innovation platform Forward Fooding, more than 50 companies around the world are currently using DNA technology to improve crops. It notes that since 2013, they have raised around 2.3 billion in funding.

CRISPR is not perfect. Its important to note that this technology is still new, and more research is needed into the long-term effects of gene-editing crops. But so far, the progress is promising.

As well as a move away from animal agriculture, which is widely considered by scientists to be depleting the earth of natural resources and driving up emissions, CRISPR could be one of the key factors in building a more sustainable, resilient, nutritious food system, which may also be able to feed more people than ever.

Charlotte is a writer and editor based in sunny Southsea on England's southern coast.

Original post:
Revolutionary CRISPR Technology Is Helping Make Crops More Resilient to the Climate Crisis - VegNews

Scientists reversed some signs of immune aging in mice with a new treatment that could one day potentially be used in humans.

The new immunotherapy works by disrupting a natural process by which the immune system becomes biased towards making one type of cell as it ages.

The mouse study is an "important" proof-of-concept, but it's currently difficult to gauge the significance of the findings, Dr. Janko . Nikolich-Zugich, a professor of immunobiology at the University of Arizona who was not involved in the research, told Live Science in an email. More work is needed to see how well the therapy shifts the immune system into a more youthful, effective state.

All blood cells, including immune cells and the red blood cells that carry oxygen around the body, start life as hematopoietic stem cells (HSC) in the blood and bone marrow, the spongy tissue found within certain bones. HSCs fall into two main categories: those destined to become so-called myeloid cells and those that will develop into lymphoid cells.

Myeloid cells include red blood cells and immune cells belonging to our broadly reactive first line of defense against pathogens, including cells called macrophages that trigger inflammation. Lymphoid cells include cells that develop a memory of germs, such as T and B cells.

Related: 'If you don't have inflammation, then you'll die': How scientists are reprogramming the body's natural superpower

As we age, the HSCs slated to become myeloid cells gradually increase in number and eventually outnumber the lymphoid stem cells. This means we can't respond to infections as well when we're older as when we're young, and we're more likely to experience chronic inflammation triggered by increasing levels of myeloid cells that trigger inflammation.

Get the worlds most fascinating discoveries delivered straight to your inbox.

In the new study, published Wednesday (March 27) in the journal Nature, scientists developed an antibody-based therapy that selectively targets and destroys the myeloid HSCs, thus restoring the balance of the two cell types and making the blood more "youthful." The antibodies latch onto the targeted cells and flag them to be destroyed by the immune system.

The authors injected the therapy into mice aged 18 to 24 months, or roughly the equivalent of being between 56 and 69 years old as a human.

They then extracted HSCs from the mice after treatment and analyzed them, revealing the rodents had a smaller percentage of the myeloid HSCs than untreated mice of the same age.

This effect lasted for two months. Compared with untreated mice, the treated mice also produced more naive T cells and mature B cells. These cells can go on to form memory cells, which are directly involved in the immune attack; in the case of the B cells, they can form antibody-producing plasma cells.

"Not only did we see a shift toward cells involved in adaptive immunity, but we also observed a dampening in the levels of inflammatory proteins in the treated animals," Dr. Jason Ross, lead study author and postdoctoral researcher at Stanford University, said in a statement. Specifically, the researchers saw that the levels of one proinflammatory protein fell in the treated mice. This protein, called IL-1beta, is mainly made by myeloid cells.

Eight weeks post-treatment, the researchers vaccinated the mice against a virus they'd never been exposed to before. The mice that had received the immunotherapy had more apt immune responses to vaccination than the untreated mice, producing more T cells against the germ.

"We believe that this study represents the first steps in applying this strategy in humans," Ross said. However, other experts have cautioned against jumping to conclusions.

Nikolich-Zugich noted that, although the researchers measured changes in the numbers of naive T cells in the mice, they didn't look at the function of the organ that makes them: the thymus. The team also saw reductions only in IL-1beta and not other inflammatory proteins. They also didn't test whether the mice's baseline immunity to new infections could be improved with this therapy, without vaccination, he said.

Furthermore, the study didn't consider potential long-term side effects of the treatment, such as anemia, or a deficiency in red blood cells, said Dr. Ilaria Bellantuono, a professor in musculoskeletal aging at the University of Sheffield in the U.K. who was not involved in the research.

Although an "interesting" study, more work is needed to understand whether it can bring "meaningful changes" in the immune system, Bellantuono told Live Science in an email, whether that of mice or humans.

Ever wonder why some people build muscle more easily than others or why freckles come out in the sun? Send us your questions about how the human body works to community@livescience.com with the subject line "Health Desk Q," and you may see your question answered on the website!

Here is the original post:
New immunotherapy could make blood more 'youthful,' mouse study hints - Livescience.com