Multiple Myeloma an incurable disease, but I have spent the last 25 years in remission using a blend of conventional oncology and evidence-based nutrition, supplementation, and lifestyle therapies from peer-reviewed studies that your oncologist probably hasn't told you about.
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How is CAR-T therapy, T cells and myeloma related? Or to phrase this question differently, myeloma patients need T cells in order to have CAR-T cell therapy. And if the MM patient’s T cells are exhausted, their CAR-T therapy won’t work very well.
Relapsed, refractory myeloma patients undergo cycle after cycle of different types of chemotherapy. This is how MM patients stay alive.
However, the studies linked below explain two important things about myeloma patients-
Unfortunately, myeloma patients are at a disadvantage to begin with because:
What non-conventional therapies can enhance a person’s immune system?
If you are a MM patient it is probable that your oncologist has already mentioned you having CAR-T cell therapy. If you are like most MM patients, you are trying to figure out the “sequencing” of the many therapy choices.
My view as a MM survivor and MM cancer coach is that CAR-T cell therapy is still in the early stages of development, as MM therapies go, and therefore is nowhere near perfected (as of 12/24). At the same time, the more conventional chemotherapy regimens you undergo, the weaker you immune system may become.
Regardless of your sequencing, I encourage you to undergo as many of the non-conventional immune enhancing therapies listed above as possible.
Email me at David.PeopleBeatingCancer@gmail.com with questions about multiple myeloma.
Hang in there,
Abstract- Chimeric antigen receptor (CAR) T-cell therapy has revolutionized the treatment paradigms for hematological malignancies. However, more than half of these patients cannot achieve sustainable tumor control, partially due to the inadequate potency of CAR-T cells in eradicating tumor cells.
T cells are crucial components of the anti-tumor immune response, and multiple intrinsic T-cell features significantly influence the outcomes of CAR-T cell therapy. Herein, we review progressing research on T-cell characteristics that impact the effectiveness of CAR-T cells, including:
With comprehensive insight into the biological processes underlying successful CAR-T cell therapy, we will further refine the applications of these novel therapeutic modalities, and enhance their efficacy and safety for patients…
Conclusion= Since its first clinical application in 2010, CAR-T cell therapy has shown notable success in the treatment of B-cell malignancies. However, achieving sustainable long-term response and remission remains a challenge, for resistance and disease relapse persist as common outcomes for many patients. T cells are the main adaptive immune cells against tumors and serve as the cellular basis for CAR-T cell therapy. Better exploration and characterization of T-cell properties, such as exhaustion, memory status, subsets, senescence, metabolism, and TCR repertoire will enable the dissection of CAR-T cell function in preclinical models and patients.
Importantly, recent developments in multi-omics profiling techniques, including genomics, transcriptomics, proteomics and beyond, have greatly facilitated the exploration of the remarkable diversity of T-cell phenotypes and expanded our collective knowledge in CAR-T cell therapy. It is to be expected that our growing understanding of T-cell characteristics will allow the optimization of CAR-T cell manufacturing, the prediction of treatment responses, and the personalization of therapy.
“Engineered T-cell therapies (CAR-T cell therapies) have demonstrated impressive clinical responses in patients with hematologic malignancies. Despite this efficacy, many patients have a transient persistence of T cells, which can be correlated with transient clinical response.
Translational data on T cells from pediatric cancer patients shows a progressive decline in chimeric antigen receptor (CAR) suitability with cumulative chemotherapy regardless of regimen. We investigated the effects of chemotherapy on surviving T cells in vitro, describing residual deficits unique to each agent including mitochondrial damage and metabolic alterations.
In the case of cyclophosphamide but not doxorubicin or cytarabine, these effects could be reversed with N-acetylcysteine. Specifically, we observed that surviving T cells could be stimulated, expanded, and transduced with CARs with preserved short-term cytolytic function but at far lower numbers and with residual metabolic deficits.
These data have implications for understanding the effects of chemotherapy on mature T cells later collected for adoptive cell therapy, as chemotherapy-exposed T cells may have lingering dysfunction that affects ex vivo adoptive cell therapy manufacturing techniques and, ultimately, clinical efficacy…”
‘…Predictably, the level of lymphocytes, which included various types of NK (or natural killer cells), T cells and B cells, dropped significantly after chemo, but the impact was short-term. Nine months later, most of the immune cells were up and running at pre-chemo levels…
When it came to certain types of NK, T and B cells, however, the researchers found chemo had a long-term effect. After nine months, B cells (important for creating antibodies) and CD4 T cells (also known as helper T cells) had only “partial recovery,” reaching only 69 percent and 60 percent of pre-chemo levels respectively, potentially leaving patients vulnerable.
In smokers, B cell recovery “was substantially and significantly impaired,” the researchers wrote, reaching only 51 percent of pre-chemo levels after 9 months…”
CAR-T therapy T cells and myeloma