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Tackling lethal tumors

Emma Karp is a stu­dent of the Elite Graduate Program “Bi­omed­ical Neu­rosci­en­ce”, who de­cided to focus on un­der­stand­ing dis­eases of the cen­tral nerv­ous sys­tem. Dur­ing a 5-month in­tern­ship at the Ka­rolin­ska insti­tute in Stockholm, Swe­den, she inves­tigat­ed new possi­ble thera­pies for lethal brain tu­mors.

Challenges in fighting tumors

The group of Prof. Ola Her­man­son works with two dif­ferent lethal brain tumor cell types. These cells are used to inves­tigate the effect of sub­stanc­es that could be added to chemother­apy. We aim to re­duce long-term com­plica­tions in chil­dren and en­hance thera­py out­come of all pa­tients. Even though tu­mors have been known for a long time and surgi­cal ad­vanc­es allow for safer biop­sy of the tu­mor, they are not cura­ble yet. Addi­tional­ly, they show re­sis­tance to cur­rent treat­ment op­tions. Nei­ther irradi­ation nor chemo­therapy lead to a long-term cure of the pa­tients. In­stead, both op­tions go along with neuro­logi­cal com­plica­tions.

Neural stem cells vs tumor cells

Neu­ral stem cells are im­portant cells in the brain. They can mi­grate to a site of injury, like the site of the tumor after a biop­sy. There, they help in re­gen­er­ating the tissue. How­ever, tumor treat­ment can­not dif­feren­tiate be­tween these cells and the un­want­ed tumor cells. By find­ing a sub­stance that spe­cifi­cally pro­tects our neural stem cells, we hope to re­duce long-term com­plica­tions. Lithi­um is an ele­ment that is al­ready used in the treat­ment of other neuro­logi­cal dis­eases. The group al­ready saw pro­tec­tive ef­fects re­garding neu­ral stem cells. Dur­ing her in­tern­ship, Emma could show that Lithi­um does not pro­tect tumor cells. In a next step, the group will com­bine the dif­ferent cells and treat­ment op­tions. Ulti­mate­ly, the goal is to change the treat­ment para­digm in the clin­ics.

Text: Emma Karp, Elite Graduate Program “Biomedical Neuroscience”