Cancer cells activate glycolysis, glutaminolysis and β-oxidation to promote their biosynthesis. The low activity of pyruvate kinase, reexpressed in its embryonic isoform PKM2, generates a bottleneck at the end of glycolysis, which reorients glucose catabolism towards formation of molecules implied in numerous synthesis: ribose for nucleic acids, glycerol for lipid synthesis, etc. However, a part of glucose is transformed in pyruvate, which also comes from aminoacids catabolism. Due to the inhibition of pyruvate dehydrogenase, pyruvate is preferentially transformed into lactate, either in the presence of oxygen (Warburg effect).
Lactate dehydrogenase reaction furnishes lactic acid, which acidifies the tumoral microenvironment, a process which favors the cellular growth and regenerates NAD(+), a crucial cofactor for the functioning of various metabolic pathways (glycolysis, DNA synthesis and repair…). Cancer cells consume a lot of glutamine, which replenish Krebs cycle (coupled with ATP production), and/or furnishes aspartate for nucleotides synthesis. This particular metabolism is sustained by activation of oncogenes (Myc, AKT, etc.) and suppressors inactivation (P53, PTEN…).
Like a parasite, cells draw on reserves of the host to supply their own biosynthesis, while they secrete waste products (NO, polyamines, ammonia, lactate…) that promote cellular growth. A “symbiotic” cooperation could be established between tumor cells themselves, and/or with environmental cells, to maximize ATP production in relation with resources and oxygen concentration.
https://www.ncbi.nlm.nih.gov/pubmed/23615669
Published by connie dello buono
Connie Dello Buono is based in Sunnyvale California. Her first ebook is about women's health, Birthing Ways Healing Ways and her recent one is about cancer prevention, Curated Healing Ways. She had helped women have holistic childbirth as childbirth educator, founded Motherhealth, to serve seniors in the bay area with holistic caregivers and blogs at www.clubalthea.com with more than 10,000 health and finance related posts.
Connie trains her own caregivers, which are the favorites of most bay area seniors who are home bound and alone.
She is active in the rehab and nursing facilities, volunteering on music and movement for seniors.
She is a member of Lion's club and offered scholarships to students in the Philippines.
She is active at churchinsunnyvale.us and has Fridays Bible home study in Sunnyvale using the recovery version of the Bible , free at biblesforamerica.us
She loves dancing and teaching and her courses can be found at
https://teachclub.com/@thriveafter60
She is California Life Insurance licensed providing life insurance for older adults with health issues and helping women retire safely with income for life.
at menloassetca.com , she helps with 401k rollover.
3 Benefit plans
- Mortgage protection using term life insurance to pay for mortgage balance in event of death
- Final Expense plan using Single Issue Whole Life Insurance, with cash back, disability benefit and guaranteed in the presence of health issues
- Fixed Index Annuity retirement plan for safe, accessibility, less fees, less taxes, avoids probate as it goes directly to beneficiaries, rate of return with no downside market participation.
She brings compassion and understanding to the needs of her clients, bringing holistic approach in health and life insurance. Her goal is to free families from worries especially during covid with caregivers and life insurance in the presence of health issues, especially for women.
She can be reached at 408-854-1883 , motherhealth@gmail.com
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